Sold as a set of two books. Both book covers have "folds" on the spine. (Images 4 and 7) There is a "fold" on the back of "Happy Habits." (Image 8) Otherwise, the books are in good condition. I read them once and stored them in a dark place. *I have a cat. Instant purchase is OK. No price reductions. I try my best to inspect the books thoroughly, but I am a private seller, so there may be oversights. Please refrain from purchasing if you are concerned about minor imperfections. I may reuse packaging materials. Thank you for looking.